# -*- coding: utf-8 -*-
# https://blog.csdn.net/weixin_52040868
# 公众号：测个der
# 微信：qing_an_an

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import pyqtSignal

class QWIN(QWidget):
    button_click = pyqtSignal()

    def __init__(self):
        super(QWIN, self).__init__()
        self.resize(330,50)
        btn = QPushButton("关闭",self)
        # 连接信号与槽
        btn.clicked.connect(self.btn_click)
        self.button_click.connect(self.close)

    def btn_click(self):
        self.button_click.emit()


if __name__ == '__main__':
    app = QApplication(sys.argv)
    win = QWIN()
    win.show()
    sys.exit(app.exec_())
